Hilti DC-SE20 - User Manual

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OPERATING PROCEDURE

Wall chaser

WALL CHASER

CAUTION

Observe nationally applicable regulations including,

for example, accident prevention regulations issued

by trade associations and regulations concerning the

general requirements to be met by workplaces on

construction sites.

(Guide only)

ADJUSTING THE CUTTING DEPTH

1. Press the two depth adjustment buttons and hold

them in the pressed position.

2. Set the desired cutting depth according to the

depth scale.

3. Release the two depth adjustment buttons.

SLITTING

1. Position the machine on the material in which

the slits are to be cut.

NOTE

The cutting line pointer indicates the

  positionoftherstdiamonddisc.

NOTE

The working direction is indicated by the

cutting direction arrow.

2. Push the on/off switch to the side, press it in and

hold it in the pressed-in position.

3. Press the plunge movement lockbutton and hold

it in this position.

4. Apply reasonable pressure to the front grip of

the machine, causing the discs to plunge slowly

into the material to be cut until the preset cutting

depth is reached.

5. Guide the machine with both hands, applying

reasonable pressure in the cutting direction.

NOTE

Application of excessive pressure in the

cutting direction when slow cutting

progress is made may result in

overheating and irreparable damage to

the diamond discs.

NOTE

Application of excessive pressure in the

cutting direction when slow cutting

progress is made may cause the motor to

stall.

6. Release the on/off switch if

you wish to interrupt or end

the slitting operation.

7. Diamond cutting discs that

project from the machine

present a risk of injury.

Lift the machine away from

the working surface without

pivoting or tilting it and then

release the plunge movement

lockbutton.

SHARPENING THE DIAMOND

DISCS

1. Laythesharpeningplateat

 (notonitsedge)onasolid,at

surface (concrete) and secure

it in position.

2. Set the machine to cut to a

depth of 15 mm.

CAUTION

When switching on, the machine must be in the

starting position. You may loose control of the

machine if the diamond discs are in contact with the

material to be cut when you switch the machine on.

DANGER

After lifting the machine away

from the working surface,

release the plunge movement

lockbutton. This will lock the

parts of the machine in their

original starting position.

CAUTION

Never hold the sharpening plate

against the rotating diamond

cutting discs.

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Summary

Mandatory Personal Protective Equipment

Summary

Mandatory Personal Protective Equipment

This document outlines the operating procedures and safety guidelines for a "Wall Chaser" device, specifically a HILTI DC-SE20, provided by "HIRE DEPOT".

Function Description

A wall chaser is a power tool designed to cut narrow grooves or channels into walls, typically for embedding electrical cables or plumbing pipes. The HILTI DC-SE20 model uses diamond cutting discs to achieve this. The device is operated by guiding it along the material to be cut, with adjustable cutting depth.

Important Technical Specifications

While specific numerical technical specifications like motor power or disc diameter are not explicitly stated, the manual highlights several functional aspects that imply technical capabilities:

Cutting Depth Adjustment: The device allows for precise adjustment of the cutting depth using two dedicated buttons and a depth scale. This indicates a mechanism for controlling the depth of the groove.
Diamond Cutting Discs: The use of diamond cutting discs implies the ability to cut through hard materials like concrete, brick, or stone. The manual also mentions the need to select the "right type of diamond disc for the material to be cut," suggesting different discs are available for various materials.
Plunge Movement: The machine incorporates a plunge movement mechanism, allowing the discs to slowly enter the material until the preset cutting depth is reached. A "plunge movement lockbutton" is mentioned, which locks the machine parts in their original starting position when released after lifting the machine from the working surface.
Working Direction Indicator: A "cutting line pointer" indicates the position of the first diamond disc, and a "working direction arrow" indicates the working direction, aiding in precise operation.
Safety Features: The manual emphasizes several safety features and warnings, including the need to release the plunge movement lockbutton after lifting the machine, the risk of injury from projecting diamond discs, and the caution against holding the sharpening plate against rotating discs. It also warns against switching on the machine when the diamond discs are in contact with the material to be cut, as this can lead to loss of control.

Usage Features

The wall chaser is designed for efficient and controlled groove cutting, with several features enhancing its usability:

Adjusting Cutting Depth:
1. Press and hold the two depth adjustment buttons.
2. Set the desired cutting depth using the depth scale.
3. Release the depth adjustment buttons.
Slitting Operation:
1. Position the machine on the material, ensuring the diamond discs are not in contact with the material when switching on.
2. Push and hold the on/off switch to the side.
3. Press and hold the plunge movement lockbutton.
4. Apply reasonable pressure to the front grip, allowing the discs to slowly plunge to the preset depth.
5. Guide the machine with both hands, applying reasonable pressure in the cutting direction.
6. Release the on/off switch to interrupt or end the operation.
7. Lift the machine away from the working surface without pivoting or tilting, then release the plunge movement lockbutton.
Working Direction: The cutting line pointer and working direction arrow assist in guiding the machine accurately.
Controlled Plunge: The ability to slowly plunge the discs into the material helps in starting cuts smoothly and precisely.
Two-Handed Operation: The instruction to guide the machine with both hands ensures stability and control during operation.
Limitations: The manual explicitly states, "It is not possible to cut curves," indicating the tool is designed for straight cuts only. It also advises against pivoting or tilting the machine while guiding it.

Maintenance Features

The document provides specific instructions for maintaining the performance of the diamond discs and troubleshooting common issues:

Sharpening the Diamond Discs:
1. Lay the sharpening plate flat (not on its edge) on a solid, flat surface (e.g., concrete) and secure it.
2. Set the machine to cut to a depth of 15 mm.
3. Hold the machine securely with both hands and guide it towards the fixed sharpening plate.
4. Make two to three cuts across the sharpening plate.
- Caution: Never hold the sharpening plate against the rotating diamond cutting discs.
Troubleshooting Guide: A comprehensive troubleshooting table is provided for common problems:
- Faulty supply cord or plug: Contact Hiredepot for support.
- No electric power: Check electricity supply and connect to a functioning outlet.
- Worn carbon brushes: Contact Hiredepot for support.
- Machine overloaded (excessive cutting pressure): Reduce cutting pressure.
- Machine overheated (prolonged overloading): Allow the machine to cool down (running without load accelerates cooling), then switch off and on again.
- Low cutting performance (unsuitable discs): Use suitable diamond cutting discs.
- Low cutting performance (badly worn or inadequately sharpened discs): Change or sharpen the diamond cutting discs.
General Maintenance Advice:
- The manual warns against applying excessive pressure, as it can lead to overheating, irreparable damage to the diamond discs, or cause the motor to stall.
- It also advises checking if diamond cutting discs are badly worn or need replacement/sharpening if cutting performance drops.
- Important: "Do not under any circumstances attempt any repairs. Please call your local Hiredepot branch for assistance." This emphasizes professional servicing for complex issues.

Mandatory Personal Protective Equipment

The document stresses the importance of safety by listing mandatory PPE:

Face mask
Ear protection
Goggles
Hard hat
Protective gloves

This comprehensive guide ensures users can operate the HILTI DC-SE20 wall chaser safely and effectively, maintain its performance, and troubleshoot common issues.